<h2>My Heroes</h2>
<div>
  <label>Hero name：<input #heroName /></label>
  <button (click)="add(heroName.value);heroName.value=''">add</button>
</div>
<ul class="heroes">
  <li *ngFor="let hero of heroes">
    <a routerLink="/detail/{{hero.id}}">
      <span class="badge">{{hero.id}}</span> {{hero.name}}
    </a>
    <button class="delete"
            title="delete hero"
            (click)="delete(hero)">x</button>
  </li>
</ul>
<app-hero-detail [hero]="selectedHero"></app-hero-detail>
